You were in the studio with Arthur, with a bowl of water and a cloth.

He had protected a German family from some idiots who had come to his shop to cause trouble, and had been hit on the nose, causing it to bleed.

His sister was taking care of the family, and you were taking care of him, holding his chin while you cleaned the blood from his nose.

He was pensive, looking at his replica of the solar system. Something had gone wrong in that lecture he had before the horrific events involving the German family.